Description

This course guides Java developers through the sometimes bewildering array of approaches to adding Ajax functionality into their web applications. We analyze the challenges of supporting Ajax from the server side, going beyond simple Ajax request-handling strategies to consider goals such as:

• Adhering to the model/view/controller pattern
• Minimizing duplication of business and presentation logic
• Providing Ajax code transparent access to the application's domain model

Reuse mechanisms such as JSP tag files and JSF facelets are also considered.

We then look at two of the dominant forms of Ajax framework: the RMI approach, and JSF component libraries. For each class of tool we investigate two popular options -- DWR and jabsorb; RichFaces and Trinidad -- and use that comparison to discover the broader architectural patterns of that approach.

Students will complete the course ready to make intelligent choices of Ajax tooling for their applications, and to start working with their chosen framework.

Training days

2 days

Prerequisites

• Understanding of the Ajax programming model is required. This course is intended to follow Course CFR201, Developing Ajax Applications, or some equivalent training.
• Significant Java programming experience is required.
• Basic servlets and JSP programming experience is required.
• JSF experience will be helpful for the final unit, but is not required.

Skills gained

• Identify architectural and design challenges inherent in the use of Ajax for Java applications.
• Define a request-handling path that best addresses the needs of a given Java web application.
• Manage script content and bind scripts to graphical widgets using JSP.
• Use JSP tag files to consolidate presentation chunks such that they can be shared between pages and Ajax responses.
• Process and generate various Ajax wire formats, including text, HTML fragments, XML, and JSON, both client-side and server-side.
• Understand the impact of Ajax processing on session management and security.
• Use RMI frameworks including DWR and jabsorb to provide direct connectivity to Java domain and/or service classes.
• Use JSF componentn libraries including RichFaces and Trinidad to model Ajax functionality as part of the usual JSF UI model and processing lifecycle.

Course content

Price:  700 €

Date:  on demand